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Plumbogummite
Plumbogummite

Covellite
Covellite



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Plumbogummite
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Covellite

Plumbogummite and Covellite Optical Properties

1 Optical Properties
1.1 Luster
Resinous
Resinous
1.2 Pleochroism
None
Marked
1.3 Dispersion
NANA
Fluorite Optical Properties
0.007 1
1.4 Transparency
Not Available
OpaqueAnthony et al, Handbook of mineralogy (2001) More from other references
1.5 Refractive Index
1.653-1.6881.45-2.62
Agate Opal
1 3.25
1.6 Optic Character
Not Available
Not Available
1.7 Crystal System
Trigonal
Hexagonal
1.8 Birefringence
Not AvailableNot Available
Achroite
0 0.296
1.9 Clarity
Not Available
OpaqueAnthony et al

Plumbogummite and Covellite Optic Character

Plumbogummite and Covellite optical properties play a significant role while distinguishing these gemstones from each other. These properties are influenced by the Plumbogummite and Covellite Physical Properties like crystallographic symmetry, pleochroism,etc. in the crystal. Some of the optical properties are refractive index, luster, optic character, pleochroism etc. Prominent among these is Plumbogummite and Covellite optic character. You might have noticed your gemologist rotating the gemstone while testing it. Rotating a gemstone along its optic axis helps in determining its optic character.

Plumbogummite and Covellite Transparency

Similar to their colors, Plumbogummite and Covellite transparency can also be used as criteria for their primary identification. Although transparency cannot be the only criteria for gemstone identification, it can efficiently used in gemstone grading. Talking about their transparency, Plumbogummite is Not Available while Plumbogummite is Not Available in appearance.